Ethyltriphenylphosphonium iodide

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-03-27 to 2017-04-11

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: UN Recommendation on the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria, Rev. 6 (2015) and UN-Model_Regulations, Rev. 19 (2015), \/Dl 2263 Sheet 1, Grewer-Oven (1990)

Version / remarks:

2015

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Relative self-ignition temperature:

> 160 °C

Remarks on result:

no self-ignition observed up to the melting point

Relative self-ignition temperature:

> 265 °C

Remarks on result:

other:

Remarks:

Test item in mixture with kieselguhr (1:1)

In the investigation of self-ignition in the Grewer-Oven initially an endothermic process was observed for the pure test item and the test item in mixture with kieselguhr in the temperature range of 160 - 170°C. This effect is attributed to the melting of the test item. Hence the pure test item flowed out of the wire basket before self-ignition could occur. The test item mixed with kieselguhr showed small self-ignition beginning at a temperature of 265 °C. This self-ignition led to a final temperature of approx. 310°C.

Table 1: Results of the screening test for self-ignition in the Grewer-Oven

Experiment	Onset self ignition / °C	Maximum temperature / °C
Pure test item	----	----
Test item in mixture with kieselguhr (1:1)	265	310

Conclusions:

In the Grewer oven test, the pure Ethyltriphenylphosphonium iodide melted at around 160°C and flowed out of the wire basket before self-ignition could occur. Due to the melting of the test item before self-ignition could occur the test item does not need to be classified as self-heating substance in Class 4 Division 4.2 according to the UN Transport Regulation or according to EC 1272/2008 (CLP Regulation) Annex 1: 2.11.

Description of key information

not self-ignitable up to melting point

Additional information

GLP study according to VDI 2263, sheet 1 and with respect to the classification procedure of the UN Transport Regulation (Class 4, Division 4.2) and GHS or EC 1272/2008 (CLP Regulation) Annex 1: 2.11) using a Grewer Oven.

UN Transport Regulation: Due to the melting of Ethyltriphenylphosphonium iodide before self-ignition could occur the test item does not need to be classified as self-heating substance in Class 4 Division 4.2 according to the UN Transport Regulation.

GHS and EC 1272/2008 (CLP Regulation) Annex 1: 2.11: Due to the melting of Ethyltriphenylphosphonium iodide before self-ignition could occur the test item does not need to be classified as self-heating substance according to EC 1272/2008 (CLP Regulation) Annex 1: 2.11.